JP2804349B2 - Non-blasting method for large-section hard rock tunnel - Google Patents
Non-blasting method for large-section hard rock tunnelInfo
- Publication number
- JP2804349B2 JP2804349B2 JP2181533A JP18153390A JP2804349B2 JP 2804349 B2 JP2804349 B2 JP 2804349B2 JP 2181533 A JP2181533 A JP 2181533A JP 18153390 A JP18153390 A JP 18153390A JP 2804349 B2 JP2804349 B2 JP 2804349B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- pit
- tunnel
- hard rock
- mirror surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、発破による振動や騒音の規制を受け、トン
ネル掘削で発破工法が採用できない大断面の硬岩トンネ
ルにおける無発破工法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a non-blasting method for a hard rock tunnel having a large cross section, which is restricted by vibration and noise caused by blasting and cannot be used for tunnel digging.
［従来の技術］ トンネル掘削に際し、岩盤強度が800kg/cm2以下の場
合は、ロードヘッダ等のトンネル掘削機で施工してお
り、岩盤強度が1000kg/cm2を越える岩盤では、主として
TBMいわゆるトンネルボーリングマシンに頼っていた。
しかし、このトンネルボーリングマシンは、掘削断面が
円形である、直径が５〜7mである、機械費が高い、など
の欠点がある。Upon [Prior Art] tunneling, if the rock strength is 800 kg / cm 2 or less, have been applied by tunnel boring machine, such as a load header, the bedrock rock strength exceeds 1000 kg / cm 2, principally
They depended on TBM, a so-called tunnel boring machine.
However, this tunnel boring machine has drawbacks such as a circular excavation section, a diameter of 5 to 7 m, and a high mechanical cost.
一般に、大断面トンネルは、トンネル鏡面を少しづつ
静的破砕機により掘削しており、掘削能率が低い。Generally, a large section tunnel is excavated by a static crusher little by little on a mirror surface of the tunnel, and the excavation efficiency is low.
また特開昭51−8737号公報にはトンネルの上部を掘削
し、その後下部をクローラードリルによりベンカット方
式のように穿孔する技術が開示されている。しかしなが
ら、かかる公知技術では比較的に小断面の場合はよいが
大断面の場合にはあらかじめ上方を削除する支保工が面
倒となる。JP-A-51-8737 discloses a technique in which an upper portion of a tunnel is excavated and then a lower portion is drilled by a crawler drill like a vent cut method. However, in the case of such a known technique, a relatively small cross section is good, but in the case of a large cross section, it is troublesome to remove the upper portion in advance.
［発明が解決しようとする課題］ したがって本発明の目的は、地山の崩壊を地山自体が
防止でき、かつ掘削能率を充分に高めることができる大
断面の硬岩トンネルにおける無発破工法を提供するにあ
る。[Problem to be Solved by the Invention] Accordingly, an object of the present invention is to provide a non-blasting method for a hard rock tunnel having a large cross section, which can prevent collapse of the ground itself and sufficiently enhance excavation efficiency. To be.
［課題を解決するための手段］ 本発明の大断面の硬岩トンネルにおける無発破工法に
よれば、本坑から導孔掘削機により削面機が作業できる
大きさの導孔を掘削し、該導孔内から削面機により放射
状の複数列のスリット又は連続孔を削面し、次いで本坑
の鏡面から前記のスリット又は連続孔により形成された
壁体を破砕して導孔より半径方向外方に一次坑まで掘削
し、次いで同様にして二次坑まで掘削し、以下同様に本
坑まで掘削して鏡面を前進させるようになっている。[Means for Solving the Problems] According to the non-blasting method for a large-section hard rock tunnel of the present invention, a hole is drilled from a main pit by a hole excavator so as to be able to operate a shaving machine. A plurality of radial rows of slits or continuous holes are cut from the inside of the hole by a face-cutting machine, and then the wall formed by the slits or continuous holes is crushed from the mirror surface of the main pit to be radially outward from the guide hole in the primary direction. It excavates to a pit, then to a secondary pit in the same manner, and then to the main pit to advance the mirror surface.
上記導孔掘削機には、トンネルボーリングマシン、硬
岩トンネル掘削機等を使用するのが好ましい。It is preferable to use a tunnel boring machine, a hard rock tunnel excavator, or the like as the hole excavator.
また、削面機には、スリットカッタ、連続孔掘削機を
用いるのが好ましい。In addition, it is preferable to use a slit cutter and a continuous hole excavator as the cutting machine.
また、破砕機には、ブレーカ等を使用するのが好まし
い。Further, it is preferable to use a breaker or the like for the crusher.
［作用］ 上記の大断面の硬岩トンネルにおける無発破工法にお
いては、本坑側のスリット又は連続孔により本坑鏡面と
の間に壁体が形成される。したがって、スリットカッタ
等破砕機により前記壁体を容易に破砕し、スリット又は
連続孔の奥の面により前記壁体を容易に破砕し、スリッ
ト又は連続孔の奥の面により新鏡面を形成する。以下同
様の態様で逐次壁体を破砕してトンネル本坑を能率的に
掘進する。[Action] In the non-blasting method for the hard rock tunnel having a large cross section, a wall is formed between the main tunnel mirror surface and a slit or a continuous hole on the main tunnel side. Therefore, the wall is easily crushed by a crusher such as a slit cutter, the wall is easily crushed by the inner surface of the slit or the continuous hole, and a new mirror surface is formed by the inner surface of the slit or the continuous hole. Thereafter, the wall is sequentially crushed in the same manner to efficiently excavate the main tunnel.
［実施例］ 以下図面を参照して本発明の実施例を説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図及び第２図において、先ず、図示しないトンネ
ルボーリングマシン又は硬岩トンネル掘削機等の導孔掘
削機により導孔Ａを掘削する。その導孔Ａの大きさは、
削面機すなわち図示の例ではスリットカッタ１が作業で
きる大きさに形成されている。なお、地質が悪い場合
は、導孔Ａの周壁を吹付けコンクリート又はファイバボ
ルトで支保しておく。In FIG. 1 and FIG. 2, first, a hole A is excavated by a hole excavator such as a tunnel boring machine or a hard rock tunnel excavator (not shown). The size of the hole A is
In the illustrated example, the slitting cutter 1 is formed in such a size that the slit cutter 1 can work. When the geology is bad, the peripheral wall of the guide hole A is supported by shotcrete or fiber bolt.
次いで、スリットカッタ１により岩盤Ｂに多数の複数
列のスリットC1〜5C（以下総称する場合は符号Ｃを用い
る）を削面する。なお、この際にスリットカッタ１を複
数台使用し、トンネル掘削のスピードを早めるようにす
るのが好ましい。Next, a large number of rows of slits C1 to 5C (hereinafter, collectively referred to as C) are ground on the bedrock B by the slit cutter 1. In this case, it is preferable to use a plurality of slit cutters 1 to increase the speed of tunnel excavation.
次いで、本坑Ｄから破砕機すなわち図示の例ではブレ
ーカ２により、鏡面Ｅと鏡面Ｅ側のスリットＣとにより
形成された壁体B1を破砕し、スリットC1の奥の面により
新鏡面の一部E1を形成し、同様の手順で逐次新鏡面の一
部E5を形成して、本坑Ｄを一次坑D1まで掘削する。Next, a wall B1 formed by the mirror surface E and the slit C on the mirror surface E side is crushed from the main shaft D by a crushing machine, that is, the breaker 2 in the illustrated example, and a part of the new mirror surface is formed by the inner surface of the slit C1. E1 is formed, a part E5 of the new mirror surface is sequentially formed by the same procedure, and the main pit D is excavated to the primary pit D1.
次いで、スリットカッタ１により一次坑D1に前記同様
のスリットC6・・・を削面する。Then, the same slits C6... Are cut in the primary shaft D1 by the slit cutter 1.
次いで、ブレーカ２により鏡面ＥとスリットC6との間
の壁体を破砕し、本坑Ｄを二次坑D2まで掘削する。Next, the wall between the mirror surface E and the slit C6 is crushed by the breaker 2, and the main shaft D is excavated to the secondary shaft D2.
以下同様の手順を繰返し、二次坑D2を本坑Ｄまで掘削
して鏡面Ｅを前進し、トンネルを能率的に掘進する。Thereafter, the same procedure is repeated to excavate the secondary shaft D2 to the main shaft D, advance the mirror surface E, and efficiently excavate the tunnel.
［発明の効果］ 本発明によれば下記のすぐれた効果を奏する。[Effects of the Invention] According to the present invention, the following excellent effects can be obtained.
（ｉ） 導孔から放射状に削孔するので同心円状に順次
掘削され、地山の崩壊に対して抵抗のある形状となり支
保工が比較的容易となる。(I) Since the holes are radially drilled from the guide holes, they are excavated sequentially concentrically, and have a shape resistant to collapse of the ground.
（ii） 導孔が貫通すれば、水平方向の削孔による破
砕、ずり処理、放射状の削孔が同時に作業でき、能率が
よい。(Ii) If the guide hole penetrates, crushing by shearing in the horizontal direction, shearing, and radial drilling can be performed at the same time, and the efficiency is good.
（iii） 従来の機械を組合せて大断面の硬岩トンネル
を容易に掘削できる。(Iii) Large-sized hard rock tunnels can be easily excavated by combining conventional machines.
第１図は本発明の一実施態様を示す垂直断面図、第２図
は左半部に一次坑のスリット、右半部に二次坑のスリッ
トの削面状態を示す正面図である。 Ａ……導孔、Ｃ……スリット、Ｄ……本坑、Ｅ……鏡
面、１……スリットカッタ、２……ブレーカFIG. 1 is a vertical sectional view showing an embodiment of the present invention, and FIG. 2 is a front view showing a cut surface of a slit of a primary shaft in a left half and a slit of a secondary shaft in a right half. A: guide hole, C: slit, D: main shaft, E: mirror surface, 1: slit cutter, 2: breaker
Claims (1)
きる大きさの導孔を掘削し、該導孔内から削面機により
放射状の複数列のスリット又は連続孔を削面し、次いで
本坑の鏡面から前記のスリット又は連続孔により形成さ
れた壁体を破砕して導孔より半径方向外方に一次坑まで
掘削し、次いで同様にして二次坑まで掘削し、以下同様
に本坑まで掘削して鏡面を前進させることを特徴とする
大断面の硬岩トンネルにおける無発破工法。The present invention relates to a drilling machine in which a hole is drilled from a main pit by a hole drilling machine so as to allow a face mill to work, and a plurality of radial rows of slits or continuous holes are cut from the hole by the surface drilling machine. From the mirror surface of the pit, crush the wall formed by the slits or continuous holes and excavate radially outward from the guide hole up to the primary pit, and then similarly excavate up to the secondary pit, and so on. A non-blasting method in a large-section hard rock tunnel characterized by excavating to a mirror surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2181533A JP2804349B2 (en) | 1990-07-11 | 1990-07-11 | Non-blasting method for large-section hard rock tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2181533A JP2804349B2 (en) | 1990-07-11 | 1990-07-11 | Non-blasting method for large-section hard rock tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0470495A JPH0470495A (en) | 1992-03-05 |
| JP2804349B2 true JP2804349B2 (en) | 1998-09-24 |
Family
ID=16102440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2181533A Expired - Lifetime JP2804349B2 (en) | 1990-07-11 | 1990-07-11 | Non-blasting method for large-section hard rock tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2804349B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017038225A1 (en) * | 2015-08-28 | 2017-03-09 | 東洋製罐グループホールディングス株式会社 | High-frequency dielectric heating method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4780473B2 (en) * | 2007-07-02 | 2011-09-28 | 清水建設株式会社 | Tunnel construction method |
| CN102322272B (en) * | 2011-08-30 | 2013-08-21 | 李志伟 | Hard rock tunnel tunneling method |
| CN104314574B (en) * | 2014-10-13 | 2017-01-18 | 福州市规划设计研究院 | Hard rock tunnel non-blasting digging blocking method and construction method |
| CN106194200A (en) * | 2016-08-31 | 2016-12-07 | 徐州徐工基础工程机械有限公司 | A kind of efficient construction of hard rock tunnel |
| CN111878104B (en) * | 2020-07-22 | 2022-07-12 | 成都易合元科技有限公司 | Method for cracking and breaking rock |
| CN112832803B (en) * | 2021-03-17 | 2022-12-27 | 中国铁建重工集团股份有限公司 | Construction method for super-large special-shaped section |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518737A (en) * | 1974-07-12 | 1976-01-23 | Daio Kensetsu Kk | SAKUGANKITOOOGATABUREEKAANYORUKOSHITSUGANTONNERUNO MUHATSUHATSUKUTSUSAKUKOHO |
-
1990
- 1990-07-11 JP JP2181533A patent/JP2804349B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017038225A1 (en) * | 2015-08-28 | 2017-03-09 | 東洋製罐グループホールディングス株式会社 | High-frequency dielectric heating method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470495A (en) | 1992-03-05 |
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